combineZigZag - combine two priority-first lists into a new priority-first list [1017436]

< > BotCompany Repo | #1017436 // combineZigZag - combine two priority-first lists into a new priority-first list

JavaX fragment (include)

static <A, B> L<Pair<A, B>> combineZigZag(L<A> l1, L<B> l2) {
  int lA = l(l1), lB = l(l2), maxSum = max(lA, lB);
  L<Pair<A, B>> out = new L;
  
  int ndiags = lA + lB - 1;
  for diag to ndiags: {
    int row_stop = max(0, diag - lA + 1);
    int row_start = min(diag, lB - 1);
    for (int row = row_start; row >= row_stop; row--) {
      // on a given diagonal row + col = constant "diag"
      // diag labels the diagonal number
      int col = diag - row;
      out.add(pair(l1.get(col), l2.get(row)));
    }
  }

  ret out;
}

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Snippet ID:

#1017436

Snippet name:

combineZigZag - combine two priority-first lists into a new priority-first list

Eternal ID of this version:

#1017436/8

Text MD5:

c59dcc56b90a333ca28eefaa48c78573

Author:

stefan

Category:

javax

Type:

JavaX fragment (include)

Public (visible to everyone):

Yes

Archived (hidden from active list):

Created/modified:

2018-07-21 13:04:18

Source code size:

548 bytes / 18 lines

Pitched / IR pitched:

No / No

Views / Downloads:

654 / 701

Version history:

7 change(s)

Referenced in:

[show references]

1	static <A, B> L<Pair<A, B>> combineZigZag(L<A> l1, L<B> l2) {
2	int lA = l(l1), lB = l(l2), maxSum = max(lA, lB);
3	L<Pair<A, B>> out = new L;
4
5	int ndiags = lA + lB - 1;
6	for diag to ndiags: {
7	int row_stop = max(0, diag - lA + 1);
8	int row_start = min(diag, lB - 1);
9	for (int row = row_start; row >= row_stop; row--) {
10	// on a given diagonal row + col = constant "diag"
11	// diag labels the diagonal number
12	int col = diag - row;
13	out.add(pair(l1.get(col), l2.get(row)));
14	}
15	}
16
17	ret out;
18	}